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CTO / Developer / Problem Solver
Mark Castle
,
Welwyn, United Kingdom
Experience
Other titles
Skills
I'm offering
Experienced CTO and developer with 25+ years’ experience of building startups and high-tech businesses. Used to bridging business & tech with both an entrepreneurial and
business mindset.
Seeking interesting challenges in tech on contract or perm basis where I can bring my extensive experience in building high growth tech, software development, product development, network architecture or fundraising experience. I love helping companies succeed, never stop learning and I’m equally at home in the board room or getting stuck in with coding. Can work globally / travel.
business mindset.
Seeking interesting challenges in tech on contract or perm basis where I can bring my extensive experience in building high growth tech, software development, product development, network architecture or fundraising experience. I love helping companies succeed, never stop learning and I’m equally at home in the board room or getting stuck in with coding. Can work globally / travel.
Markets
United States
United Kingdom
Germany
Lithuania
Denmark
Norway
Sweden
Finland
Links for more
Once you have created a company account and a job, you can access the profiles links.
Industries
Language
English
Fluently
Ready for
Larger project
Ongoing relation / part-time
Full time contractor
Available
My experience
2017 - ?
freelance
Freelance developer
Captive Reality Ltd.
Freelance developer for companies such as Alpine Electronics, Asda / Walmart and others designing and developing Virtual Reality, Augmented Reality and Wearable apps applications and software and in Unity3d, Xamarin, Android/iOS, AWS, Serverless, C#, Java and more.
linkedin.com/in/markcastle
linkedin.com/in/markcastle
Unity 3D, Augmented Reality, Software, Electronics, Serverless, Apps, Contracts, Developer, Virtual reality, Xamarin, Linkedin, C, AWS, Android, IOS, Java, Software development, App Design, Mobile development, Wearables, Product development, 3D modelling, UI / UX
2020 - 2020
freelance
Senior Developer Team Lead & Software Architect
Deloitte Digital, AI and Analytics.
Lead a Unity3D development team for a high profile Government client to scope, architect, develop and deliver a 3D traffic simulation on traffic and goods flows across 140 border ports.
The solution included using Amazon Kinesis for ‘big data’ migration into AWS Redshift (data warehouse) in order to generate real-time Tableau reporting and analytics. This enabled the end client to replicate real-world scenarios and incidences to make informed decisions on UK border security, revenue streams, port efficiencies, lorry queuing, goods transfer to/from Europe etc.
I was responsible for translating the initial requirements and developing the prototype/MVP under intense pressure and minimal timescales with a small support team and following that the successful MVP delivery the team was rapidly scaled to deliver a scalable, highly performant, customer ready solution.
My responsibilities:
- Analysis of Customer Requirements
- UI / UX Design
- Solution Architecture and Data Design
- Project Plan
- Build a scalable Simulation Engine from scratch in C# along with Visualisation Engine in Unity3d and output to AWS Kinesis
- Develop and deliver MVP
- Scale the team to 23 members including Unity Developers, 3D Artwork, Data Engineers, Reporting and Analytics, DevOps
- Leverage Amazon Kubernetes to deploy and manage applications on AWS cloud at scale, whilst accessing simulation remotely using Apache Guacamole.
- Successfully Deliver Customer Ready solution on time and on budget
Technologies: C#, JSON, OO, Unity3D, Scrum, Agile, API/Microservices, AWS cloud, Amazon Kinesis, Tableau, AWS Redshift, Apache Guacamole
The solution included using Amazon Kinesis for ‘big data’ migration into AWS Redshift (data warehouse) in order to generate real-time Tableau reporting and analytics. This enabled the end client to replicate real-world scenarios and incidences to make informed decisions on UK border security, revenue streams, port efficiencies, lorry queuing, goods transfer to/from Europe etc.
I was responsible for translating the initial requirements and developing the prototype/MVP under intense pressure and minimal timescales with a small support team and following that the successful MVP delivery the team was rapidly scaled to deliver a scalable, highly performant, customer ready solution.
My responsibilities:
- Analysis of Customer Requirements
- UI / UX Design
- Solution Architecture and Data Design
- Project Plan
- Build a scalable Simulation Engine from scratch in C# along with Visualisation Engine in Unity3d and output to AWS Kinesis
- Develop and deliver MVP
- Scale the team to 23 members including Unity Developers, 3D Artwork, Data Engineers, Reporting and Analytics, DevOps
- Leverage Amazon Kubernetes to deploy and manage applications on AWS cloud at scale, whilst accessing simulation remotely using Apache Guacamole.
- Successfully Deliver Customer Ready solution on time and on budget
Technologies: C#, JSON, OO, Unity3D, Scrum, Agile, API/Microservices, AWS cloud, Amazon Kinesis, Tableau, AWS Redshift, Apache Guacamole
Solution architecture, Project coordination, Team Leadership, Redshift, Tableau, Scrum, Agile development, Microservices architecture, API, JSON, UI / UX designer, Software architecture and design, Software development, C#, Data Analysis, Business Intelligence, DATA ANALYSIS AND VISUALIZATION, Big Data, Serverless, Amazon Web Services, Lambda, AWS, Unity, Unity 3D, .net core
2019 - 2020
freelance
Senior Unity Developer and Software Architect
Deloitte Digital, AI and Analytics.
I was brought in as a Lead Unity Developer to scale up an existing Artificial Intelligence/3D simulation that had been developed on behalf of a prominent national Rail operator (public sector) client.
My responsibilities included:
- Reverse engineering and documenting the existing phase 1 legacy solution based on Unity 3D with Unity Physics.
- Analyse customer requirements for scaling the solution to phase 2.
- Make recommendations to the management team and lead partner for Phase 2 development.
- Jointly Architect a modular and extensible phase 2 scalable solution of the 3D simulation.
- Maintain the existing legacy codebase and back port phase 2 ready features whilst development of phase 2 progressed.
- Design and build scalable APIs for additional features using Serverless architecture / AWS Lambda / API Gateway
- Support the Data Engineers and Data Science Teams and in particular help improve the efficiency of ingesting the Neural Network ML input feed
- Facilitate large scale simulation runs to analyse a multitude of scenarios.
Technologies: C#, JSON, OO, Unity3D, Scrum, Agile, .net Core, GCP, Google PubSub, AWS Lambda, API/Microservices, Tableau
My responsibilities included:
- Reverse engineering and documenting the existing phase 1 legacy solution based on Unity 3D with Unity Physics.
- Analyse customer requirements for scaling the solution to phase 2.
- Make recommendations to the management team and lead partner for Phase 2 development.
- Jointly Architect a modular and extensible phase 2 scalable solution of the 3D simulation.
- Maintain the existing legacy codebase and back port phase 2 ready features whilst development of phase 2 progressed.
- Design and build scalable APIs for additional features using Serverless architecture / AWS Lambda / API Gateway
- Support the Data Engineers and Data Science Teams and in particular help improve the efficiency of ingesting the Neural Network ML input feed
- Facilitate large scale simulation runs to analyse a multitude of scenarios.
Technologies: C#, JSON, OO, Unity3D, Scrum, Agile, .net Core, GCP, Google PubSub, AWS Lambda, API/Microservices, Tableau
Google Cloud Platform, Agile development, Scrum, Tableau, Neural networks, AWS Lambda, Serverless.com, JSON, .net core, Google PubSub, C#, Big Data, Data Analysis, DATA ANALYSIS AND VISUALIZATION, Machine learning, Artificial Intelligence, Serverless, Software development, Unity 3D
2016 - 2017
job
CTO
VRtize Limited.
Virtual Reality Advertising and Analytics Startup.
Raised Seed funding & Built MVP but ultimately the timing was not right for the product.
Raised Seed funding & Built MVP but ultimately the timing was not right for the product.
Advertising, Ruby on rails, Virtual reality, Analytics, Cto, AWS, Unity 3D, Amazon Serverless, Amazon S3, Amazon DynamoDB, Amazon Web Services, Node.js, Software development, Php, ReactJs, C#, C++, Python, Mysql, Javascript, Wordpress, Html5, Web development, Java, Android studio, Android sdk, Cloud, Software Architecture
2001 - 2014
job
CEO
Secura Hosting Ltd.
Built a cloud and managed services startup from scratch to serve customers such as News International, Universal Pictures,
London, UK ITV, thousands of UK Schools, Rocco Forte Hotels and more which we sold to a private buyer in 2014.
Specialising initially on the Microsoft Server platform but quickly moving on to serve a variety of customers, needs and platforms.
Built an highly resilient and performant Autonomous System using BGP4, OSPF on the Juniper MX platform along with peering and transit relationships with many of the world largest ISPs and providers. Latest network design was eVPN on MPLS.
London, UK ITV, thousands of UK Schools, Rocco Forte Hotels and more which we sold to a private buyer in 2014.
Specialising initially on the Microsoft Server platform but quickly moving on to serve a variety of customers, needs and platforms.
Built an highly resilient and performant Autonomous System using BGP4, OSPF on the Juniper MX platform along with peering and transit relationships with many of the world largest ISPs and providers. Latest network design was eVPN on MPLS.
Cloud, Ceo, International, Windows server, Linux server, Network design, Network administration, It administrator, IT consultant, It support, VMware, Office 365, Windows Server and Clients, Technical support, Project Management, Change management, Project coordination, Business development, Business strategy, Business Optimization, Management
My education
1990
-
1992
TEESSIDE UNIVERSITY
HND IT, Information Technology
HND IT, Information Technology
1982
-
1989
Monks Walk School
O Levels, A Levels + GCSE, Computer Science, Art, Maths, English Lit, English Lang, Science, Computer Studies, Business Studies etc
O Levels, A Levels + GCSE, Computer Science, Art, Maths, English Lit, English Lang, Science, Computer Studies, Business Studies etc
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